Thanks for the report, interesting stuff. Never thought about lake depth vs. water temperature warming as the year goes on. Does that make Superior one of the last to warm up, to what, 45 F?! Watch out for those late season cold fronts, some strong ones are still going through. One a while back slathered a good chunk of the Caribbean with some big surf.
Say, do you dive? I wanted to checkout the wrecks of the Hamilton and/or the Scourge off Port Dalhousie near St. Catherines for the longest time. The sound remarkably intact for wooden wrecks sunk almost 200 years ago. That is assuming Cousteau left anything standing after his dive saucer attack?
http://www.hamilton-scourge.hamilton.ca/virtual.htm
Before